asum¶
Computes the sum of magnitudes of the vector elements.
Description¶
The asum
routine computes the sum of the magnitudes of elements of a
real vector, or the sum of magnitudes of the real and imaginary parts
of elements of a complex vector:
where x
is a vector with n
elements.
API¶
Syntax¶
namespace oneapi::mkl::vm {
void asum(queue &exec_queue,
std::int64_t n, buffer<T,1> &x,
std::int64_t incx, buffer<T_res,1> &result)
}
asum
supports the following precisions and devices.
T |
T_res |
Devices Supported |
---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
Input Parameters¶
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vector
x
.- x
Buffer holding input vector
x
. The buffer must be of size at least (1 + (n
- 1)*abs(incx
)). See Matrix Storage for more details.- incx
Stride of vector x.
Output Parameters¶
- result
Buffer where the scalar result is stored (the sum of magnitudes of the real and imaginary parts of all elements of the vector).